Perhaps you should try some spelling variations:
"Computer Software—revisability" » "Computer Software—realisability", "Computer Software—reusability", "Computer Software—advisability"
"computer software—usability" » "computer software—disability"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Computer Software—revisability\") OR (\"computer software—usability\"))".
• Removing quotes may allow a broader search: (( Computer Software—revisability ) OR ( computer software—usability )).
• Adding a wildcard symbol may retrieve word variants: (("Computer Software—revisability") OR ("computer software—usability"))*.